#include<
stdio.h>
int jia(int a,int b)
{
return a+b;
}
int jian(int a,int b)
{
return a-b;
}
int cheng(int a,int b)
{
return a*b;
}
int zhengchu(int a,int b)
{
if(!b)return 0;
else return a/b;
}
int mod(int a,int b)
{
if(!b)return 0;
else return a%b;
}
int main()
{
int x=5,y=2;
printf("x+y=%d\n",jia(x,y));
printf("x-y=%d\n",jian(x,y));
printf("x*y=%d\n",cheng(x,y));
printf("x/y=%d......%d\n",zhengchu(x,y),mod(x,y));
}